The best AI models for legal work, ranked by quality with bonus points for large context windows (for contracts and case law), reasoning capabilities (for legal analysis), and structured JSON output (for document automation). Updated hourly from 325+ models.
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.4 ProOpenAI | 94 |
| 2 | GPT-5.4OpenAI | 94 |
| 3 | GPT-5.4 MiniOpenAI | 93 |
| 4 | GPT-5.2 ProOpenAI | 93 |
| 5 | GPT-5.2OpenAI | 93 |
| 6 | Claude Opus 4.6Anthropic | 92 |
| 7 | GPT-5 ProOpenAI | 92 |
| 8 | o3 Deep ResearchOpenAI | 92 |
| 9 | Claude Opus 4.5Anthropic | 90 |
| 10 | GPT-5OpenAI | 90 |
| 11 | Gemini 3 Flash PreviewGoogle | 89 |
| 12 | Claude Sonnet 4.6Anthropic | 89 |
| 13 | Claude Sonnet 4.5Anthropic | 89 |
| 14 | o3 ProOpenAI | 88 |
| 15 | Grok 4.1 FastxAI | 87 |
| 16 | Grok 4.20 BetaxAI | 86 |
| 17 | Grok 4xAI | 86 |
| 18 | Gemini 3.1 Pro PreviewGoogle | 86 |
| 19 | o3OpenAI | 86 |
| 20 | GPT-5.1OpenAI | 85 |
| 21 | MiMo-V2-OmniXiaomi | 85 |
| 22 | MiMo-V2-ProXiaomi | 85 |
| 23 | GPT-5.4 NanoOpenAI | 85 |
| 24 | Seed-2.0-LiteByteDance | 85 |
| 25 | Qwen3.5-9BAlibaba | 85 |
| 26 | Seed-2.0-MiniByteDance | 85 |
| 27 | Gemini 3.1 Pro Preview Custom ToolsGoogle | 85 |
| 28 | GPT-5.3-CodexOpenAI | 85 |
| 29 | Qwen3.5 Plus 2026-02-15Alibaba | 85 |
| 30 | Kimi K2.5Moonshot AI | 85 |
AI models with large context windows (200K+ tokens) can ingest entire contracts, lease agreements, and NDAs in a single prompt. Combined with reasoning capabilities, they identify non-standard clauses, missing provisions, and potential risks - tasks that traditionally take paralegals hours to complete manually.
Models with strong reasoning excel at synthesizing case law, statutes, and regulations. Feed them a legal question with relevant authorities and they can identify precedents, distinguish holdings, and draft research memos - dramatically accelerating the brief-writing process for attorneys.
From demand letters to corporate governance documents, AI models can generate first drafts that follow standard legal formatting. JSON mode enables structured output for template-driven document assembly systems, letting legal teams automate routine filings and correspondence at scale.
Attorney-client privilege and data security are paramount. Open-source models can be self-hosted on-premises, ensuring sensitive client data never leaves your infrastructure. For firms with strict compliance requirements, self-hosted deployment eliminates third-party data processing concerns entirely.
Based on our composite scoring updated hourly, the top-ranked models are shown at the top of this page. Rankings consider benchmarks, pricing, capabilities, and community adoption.
Yes, several models listed on this page offer free tiers or are fully open-source. Look for models marked as Free in the pricing column above.
We use a composite scoring system combining benchmark performance, capability matching, pricing, context window size, and community adoption. Scores are updated hourly.
Rankings refresh every hour using real-time data from benchmarks, API testing, and community metrics. The data shown always reflects the most current performance.